Chicago, O'Hare
Airport: The CTA Blue Line station is at the lowest level of
the main parking garage (next to elevator center 4). Fare:
$1.75.

New York, John F.
Kennedy International: Take the AirTrain monorail ($5) to
stations at either Howard Beach or Jamaica. From Howard Beach, the
A-line subway fare to the city is $2. From Jamaica, the fare to
Penn Station on the Long Island Railroad is $6.75.

San Francisco
International: Walk or take the free AirTrain to the BART
station located near the airport's new international terminal.
From there, board trains for the 30-minute trip downtown (or
beyond). Fare: $4.95 (downtown).

Washington, DC;
Reagan Washington National Airport: Metro trains depart from
a station across the roadway from the main terminal. Fares range
from $1.20 to $3, depending on your destination within the
metropolitan area and the time of day.